<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
//定义数据模型(注册数据)
const registerData = ref({
    username: '',
    password: '',
    repassword:''
})
//自定义确认密码的校验函数
const rePasswordValid = (rule, value, callback) => {
    if (value == null || value === '') {
        return callback(new Error('请再次确认密码'))
    }
    if (registerData.value.password != value) {
        return callback(new Error('两次输入密码不一致'))
    }

}
//定义表单校验规则
const rules = ref({
    username: [
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ],
    repassword: [
        { validator: rePasswordValid, trigger: 'blur' }
    ]
})
//调用后台接口完成注册
import { userRegisterService } from '@/api/user'
const register = async () => {
    //registerData是一个响应式对象，如果要获取值，需要.value
    let res=await userRegisterService(registerData.value)
    if(res.code===0){
        ElMessage({
            message: '注册成功',
            type: 'success',
            duration: 2000
        })
        //注册成功跳转到登录页
        router.push('/')
    }else{
        ElMessage({
            message: '注册失败',
            type: 'error',
            duration: 2000
        })
    }
    const message=res.message
        if (message.includes('用户名')){
            ElMessage({
                message: '用户名已存在',
                type: 'error',
                duration: 2000
            })
        }
}
//定义数据模型(复用注册数据)
//调用后台接口完成登录
import { userLoginService } from '@/api/user';
import { ElMessage } from 'element-plus'
import { useTokenStore } from '@/store/token.js';
import { useRouter } from 'vue-router'
const tokenStore=useTokenStore()
const router=useRouter()
const login = async () => {
    let res=await userLoginService(registerData.value)
    ElMessage.success(res.message ? res.message : '登录成功')
    //登录成功后保存token
    // tokenStore.setToken(res.data)
    tokenStore.token = res.data
    router.push('/layout')
    
}
//定义函数清空数据模型
const clearData = () => {
    registerData.value.username = ''
    registerData.value.password = ''
    registerData.value.repassword = ''
}
</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 --> 
            <!-- el-form标签通过rules属性绑定校验规则，el-form-item标签通过prop属性绑定校验项 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item prop="repassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerData.repassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearData()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>